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/*
* Copyright (c) 2024 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef API_AUDIO_BUILTIN_AUDIO_PROCESSING_BUILDER_H_
#define API_AUDIO_BUILTIN_AUDIO_PROCESSING_BUILDER_H_
#include <memory>
#include <optional>
#include <utility>
#include "absl/base/nullability.h"
#include "api/audio/audio_processing.h"
#include "api/audio/echo_canceller3_config.h"
#include "api/audio/echo_control.h"
#include "api/audio/neural_residual_echo_estimator.h"
#include "api/environment/environment.h"
#include "api/scoped_refptr.h"
#include "rtc_base/system/rtc_export.h"
namespace webrtc {
class RTC_EXPORT BuiltinAudioProcessingBuilder
: public AudioProcessingBuilderInterface {
public:
BuiltinAudioProcessingBuilder() = default;
explicit BuiltinAudioProcessingBuilder(const AudioProcessing::Config& config)
: config_(config) {}
BuiltinAudioProcessingBuilder(const BuiltinAudioProcessingBuilder&) = delete;
BuiltinAudioProcessingBuilder& operator=(
const BuiltinAudioProcessingBuilder&) = delete;
~BuiltinAudioProcessingBuilder() override = default;
// Sets the APM configuration.
BuiltinAudioProcessingBuilder& SetConfig(
const AudioProcessing::Config& config) {
config_ = config;
return *this;
}
// Sets an echo canceller config to inject when APM is created. If a custom
// EchoControlFactory is also specified, this config has no effect.
// `echo_canceller_multichannel_config` is an optional config that, if
// specified, is applied for non-mono content.
BuiltinAudioProcessingBuilder& SetEchoCancellerConfig(
const EchoCanceller3Config& echo_canceller_config,
std::optional<EchoCanceller3Config> echo_canceller_multichannel_config) {
echo_canceller_config_ = echo_canceller_config;
echo_canceller_multichannel_config_ = echo_canceller_multichannel_config;
return *this;
}
// Sets the echo controller factory to inject when APM is created.
BuiltinAudioProcessingBuilder& SetEchoControlFactory(
std::unique_ptr<EchoControlFactory> echo_control_factory) {
echo_control_factory_ = std::move(echo_control_factory);
return *this;
}
// Sets the capture post-processing sub-module to inject when APM is created.
BuiltinAudioProcessingBuilder& SetCapturePostProcessing(
std::unique_ptr<CustomProcessing> capture_post_processing) {
capture_post_processing_ = std::move(capture_post_processing);
return *this;
}
// Sets the render pre-processing sub-module to inject when APM is created.
BuiltinAudioProcessingBuilder& SetRenderPreProcessing(
std::unique_ptr<CustomProcessing> render_pre_processing) {
render_pre_processing_ = std::move(render_pre_processing);
return *this;
}
// Sets the echo detector to inject when APM is created.
BuiltinAudioProcessingBuilder& SetEchoDetector(
scoped_refptr<EchoDetector> echo_detector) {
echo_detector_ = std::move(echo_detector);
return *this;
}
// Sets the capture analyzer sub-module to inject when APM is created.
BuiltinAudioProcessingBuilder& SetCaptureAnalyzer(
std::unique_ptr<CustomAudioAnalyzer> capture_analyzer) {
capture_analyzer_ = std::move(capture_analyzer);
return *this;
}
// The BuiltinAudioProcessingBuilder takes ownership of the
// neural_residual_echo_estimator.
BuiltinAudioProcessingBuilder& SetNeuralResidualEchoEstimator(
std::unique_ptr<NeuralResidualEchoEstimator>
neural_residual_echo_estimator) {
neural_residual_echo_estimator_ = std::move(neural_residual_echo_estimator);
return *this;
}
// Creates an APM instance with the specified config or the default one if
// unspecified. Injects the specified components transferring the ownership
// to the newly created APM instance.
absl_nullable scoped_refptr<AudioProcessing> Build(
const Environment& env) override;
private:
AudioProcessing::Config config_;
std::optional<EchoCanceller3Config> echo_canceller_config_;
std::optional<EchoCanceller3Config> echo_canceller_multichannel_config_;
std::unique_ptr<EchoControlFactory> echo_control_factory_;
std::unique_ptr<CustomProcessing> capture_post_processing_;
std::unique_ptr<CustomProcessing> render_pre_processing_;
scoped_refptr<EchoDetector> echo_detector_;
std::unique_ptr<CustomAudioAnalyzer> capture_analyzer_;
std::unique_ptr<NeuralResidualEchoEstimator> neural_residual_echo_estimator_;
};
} // namespace webrtc
#endif // API_AUDIO_BUILTIN_AUDIO_PROCESSING_BUILDER_H_
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